Method for measuring flange angle of cylindrical roller bearing ring

Abstract

The invention discloses a method for measuring the flange angle of a cylindrical roller bearing ring. The method comprises the following steps: step 1, adjusting the positions of three base fulcrums, two spring supporting legs and a movable supporting leg according to the inner diameter and the outer diameter of the bearing ring; secondly, a bearing ring is arranged on the top faces of the three base supporting points and clamped and centered by the horizontal ends of the two spring supporting legs and the ends of the adjusting screw rods of the movable supporting legs; 3, installing a measuring meter, and enabling the end of a measuring rod to abut against the flange of the bearing ring; 4, pushing the bearing ring to move towards the measuring meter through the movable supporting leg, namely enabling the measuring rod end of the measuring meter to relatively move from one end of the flange to the other end of the flange, and obtaining a difference value a between the height of one end of the flange and the height of the other end of the flange; and step 5, according to a and the length b of the flange, calculating by using a trigonometric function to obtain the inclination angle alpha of the flange. The measuring method can be simplified, and the flange angle of the bearing ring can be accurately reflected.

Description

Technical Field

[0001] The invention relates to a method for measuring the angle of a cylindrical roller bearing ring rib. Background Art

[0002] The angle of the bearing ring rib (negative back angle) is an important performance indicator of the bearing. This special structure is easy to form an oil film on the ring rib, which can play a good lubricating role on the roller end face and increase the ability of the ring to bear axial loads. The traditional measurement method is to qualitatively read the variation range of the measured negative back angle by the torsion spring table on the G906 special instrument, but it cannot quantitatively give the actual angle value of the measured negative back angle; in addition, due to the special measurement position of the negative back angle, the traditional method is difficult to measure, and the efficiency is low, and the accuracy and repeatability are not high. After repeated experiments, a new method of measuring the negative back angle of the bearing ring using a profile measuring instrument has finally been developed. At present, this method has been applied to actual measurements and has achieved satisfactory measurement results. The angle of the cylindrical roller bearing ring rib is usually measured by comparing the angle template, but this measurement method has large errors and high difficulty. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a method for measuring the rib angle of a cylindrical roller bearing sleeve, which can simplify the measuring method and accurately reflect the rib angle of the bearing ring.

[0004] The object of the present invention is achieved as follows: a method for measuring the angle of the rib of a cylindrical roller bearing ring, using a measuring device for the angle of the rib of a cylindrical roller bearing ring, the measuring device comprising a base, three base fulcrums, two spring support feet, a movable support foot and a measuring table; wherein,

[0005] The plane of the base is rectangular, and a first inverted T-shaped groove is provided on the top surface of the base on the transverse center line, a second inverted T-shaped groove is provided on a line at +45° to the transverse center line, and a third T-shaped groove is provided on a line at -45° to the transverse center line; the first inverted T-shaped groove, the second inverted T-shaped groove and the third inverted T-shaped groove intersect at the center of the top surface of the base;

[0006] The three base fulcrums are installed in the first inverted T-shaped groove, the second inverted T-shaped groove and the third inverted T-shaped groove of the base in a one-to-one correspondence, the centers of the support heads arranged on the three base fulcrums are all located on a circle with the center of the top surface of the base as the center and a diameter smaller than the outer diameter of the bearing ring and larger than the inner diameter of the bearing ring, and the center lines of the support heads on the three base fulcrums are isosceles triangles;

[0007] Two spring support feet are installed in the second inverted T-shaped groove and the second inverted T-shaped groove of the base in a one-to-one correspondence and are opposite to the base fulcrum installed in the second inverted T-shaped groove and the base fulcrum in the second inverted T-shaped groove in a one-to-one correspondence;

[0008] The movable supporting foot is installed in the first inverted T-shaped groove of the base and is opposite to the base fulcrum installed in the first inverted T-shaped groove; the movable supporting foot includes a mounting block and an adjusting screw; the mounting block is in an inverted T-shape and includes a horizontal portion and a vertical portion fixed to the middle portion of the top surface of the horizontal portion, a countersunk hole is respectively provided on both sides of the vertical portion on the top surface of the horizontal portion, so that the mounting block is connected to two nuts provided at the bottom of the first inverted T-shaped groove through two screws inserted into the two countersunk holes in a one-to-one correspondence; a threaded through hole is horizontally provided on the side surface of the vertical portion; the adjusting screw is installed in the threaded through hole of the vertical portion, the horizontal projection of the axis of the adjusting screw is located on the top surface of the base on the transverse center line, and the end of the adjusting screw is against the outer diameter surface of the bearing ring;

[0009] The horizontal ends of the two spring support feet and the end of the adjusting screw of the movable support foot are all located on a circle that matches the outer diameter of the bearing ring;

[0010] The measuring gauge is installed in the first inverted T-shaped groove of the base through a gauge seat; a countersunk hole is provided on the top surface of one side of the gauge seat, and an inverted cone-shaped support seat is fixed on the top surface of the other side of the gauge seat; the gauge seat is connected to a nut provided at the bottom of the first inverted T-shaped groove through a screw inserted in the countersunk hole of the gauge seat; the measuring gauge is a micrometer and is installed on the top surface of the support seat;

[0011] The method for measuring the angle of the cylindrical roller bearing ring rib comprises the following steps:

[0012] Step 1: adjust the positions of three base fulcrums, two spring support feet and movable support feet according to the outer diameter and inner diameter of the bearing ring to be tested;

[0013] Step 2: seat the bearing ring on the top surface of the three base fulcrums and clamp it for centering by the horizontal ends of the two spring support feet and the ends of the adjusting screws of the movable support feet;

[0014] Step 3: If the bearing ring to be measured is an outer ring, install the measuring gauge on the inner side of the outer ring so that the horizontal projection of the axis of the measuring rod of the measuring gauge is located on the top surface of the base on the horizontal center line, and the end of the measuring rod is against the lower rib of the outer ring; if the bearing ring to be measured is an inner ring, install the measuring gauge on the outer side of the inner ring so that the horizontal projection of the axis of the measuring rod of the measuring gauge is located on the top surface of the base on the horizontal center line, and the end of the measuring rod is against the lower rib of the outer ring;

[0015] Step 4: by adjusting the movable support foot, the outer ring or the inner ring is pushed to move along the first inverted T-shaped groove toward the measuring table. During the movement of the outer ring or the inner ring, it is equivalent to moving the end of the measuring rod of the measuring table relatively from one end of the rib to the other end of the rib, and obtaining the difference a between the height of one end of the rib and the height of the other end of the rib;

[0016] Step 5: According to the difference a between the height of one end of the rib and the height of the other end of the rib measured by the measuring table and the length b of the rib obtained by measurement, the inclination angle α of the rib is calculated using the trigonometric function tanα=a / b.

[0017] The above-mentioned method for measuring the angle of the rib of a cylindrical roller bearing ring, wherein the base fulcrum includes a fulcrum seat and a support head; the fulcrum seat is a rectangular block and a countersunk hole and a hemispherical groove are provided on the top surface, one inside and one outside, and the fulcrum seat is connected to a nut arranged at the bottom of the first inverted T-shaped groove or the bottom of the second inverted T-shaped groove or the bottom of the third inverted T-shaped groove through a bolt inserted in the countersunk hole; the support head is a steel ball and is installed in the hemispherical groove of the fulcrum seat; the bearing ring seat is on the support heads of the three base fulcrums.

[0018] The above-mentioned method for measuring the angle of the rib of a cylindrical roller bearing ring, wherein the spring support foot includes a sleeve, an open ring installed on the sleeve, a support foot seat fixed on the outer surface of the open ring and having a blind hole on the outer end surface, and a spring and a support rod installed inside and outside the blind hole of the support foot seat; the spring support foot is connected to a nut arranged at the bottom of the second inverted T-shaped groove or the bottom of the third inverted T-shaped groove through a bolt inserted in the sleeve, so that the outer end of the support rod is against the outer diameter surface of the bearing ring.

[0019] The beneficial effects of the method for measuring the rib angle of a cylindrical roller bearing ring of the present invention are:

[0020] 1) Solved the problem of difficulty in measuring the angle of cylindrical roller flange with angle template;

[0021] 2) The measuring device used in the present invention has a simple structure and is easy to assemble and disassemble, and can meet the measurement of the flange angles of cylindrical roller bearing rings of various sizes;

[0022] 3) The measuring device used in the present invention can simplify the measuring method, so that workers can directly measure at the processing site of the bearing ring, and can accurately reflect the flange angle of the bearing ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a top view of a device for measuring the rib angle of a cylindrical roller bearing ring used in the measuring method of the present invention (measuring the outer ring of the bearing);

[0024] Figure 2yes Figure 1 AA view in the figure;

[0025] Figure 3a is a top view of a base support point in a measuring device used in the measuring method of the present invention;

[0026] Figure 3b yes Figure 3a BB view in the figure;

[0027] Figure 4a is a top view of a spring support foot in a measuring device used in the measuring method of the present invention;

[0028] Figure 4b It is a front view of a spring support foot in a measuring device used in the measuring method of the present invention;

[0029] Figure 5a is a top view of a movable support foot in a measuring device used in the measuring method of the present invention;

[0030] Figure 5b is a front view of a movable supporting foot in a measuring device used in the measuring method of the present invention;

[0031] Figure 6a is a top view of a measuring table in a measuring device used in the measuring method of the present invention;

[0032] Figure 6b It is a front view of a measuring table in a measuring device used in the measuring method of the present invention;

[0033] Figure 7 It is a top view of the state of the present invention when measuring the inner ring of the bearing;

[0034] Figure 8 yes Figure 7 CC view in . DETAILED DESCRIPTION

[0035] The present invention will be further described below in conjunction with the accompanying drawings.

[0036] See also Figures 1 to 8 The method for measuring the angle of the cylindrical roller bearing ring rib of the present invention adopts a measuring device for the angle of the cylindrical roller bearing ring rib, and the measuring device includes a base, three base fulcrums, two spring support feet, a movable support foot and a measuring table.

[0037] The plane of the base 1 is rectangular, and a first inverted T-shaped groove 11 is provided on the top surface of the base 1 on the transverse center line, a second inverted T-shaped groove 12 is provided on a line at +45° to the transverse center line, and a third inverted T-shaped groove 13 is provided on a line at -45° to the transverse center line; the first inverted T-shaped groove 11, the second inverted T-shaped groove 12 and the third inverted T-shaped groove 13 intersect at the center of the top surface of the base 1.

[0038] The three base fulcrums 2 are installed in the first inverted T-shaped groove 11, the second inverted T-shaped groove 12 and the third inverted T-shaped groove 13 of the base 1 in a one-to-one correspondence, and each base fulcrum 2 includes a fulcrum seat 21 and a support head 22; wherein the fulcrum seat 21 is a rectangular block with a width greater than the upper width of the first inverted T-shaped groove 11 and a countersunk hole 23 and a hemispherical groove are provided on the top surface, one inside and one outside, and the fulcrum seat 21 is connected to a nut 62 arranged at the bottom of the first inverted T-shaped groove 11 or the bottom of the second inverted T-shaped groove 12 or the bottom of the third inverted T-shaped groove 13 through a bolt 61 inserted in the countersunk hole 23; the support head 22 is a steel ball and is installed in the hemispherical groove of the fulcrum seat 21; the centers of the support heads 22 arranged on the three base fulcrums 2 are all located on a circle with the center of the top surface of the base 1 as the center and a diameter smaller than the outer diameter of the bearing ring and larger than the inner diameter of the bearing ring, and the center line of the support heads 22 on the three base fulcrums 2 is an isosceles triangle.

[0039] Two spring support legs 3 are installed in the second inverted T-shaped groove 12 and the third inverted T-shaped groove 13 of the base 1 in a one-to-one correspondence and are opposite to the base fulcrum 2 installed in the second T-shaped groove 12 and the base fulcrum 2 in the third inverted T-shaped groove 13 in a one-to-one correspondence; each spring support leg 3 includes a sleeve 31, an open ring 32 installed on the sleeve 31, a support leg seat 33 fixed on the outer surface of the open ring 32 and having a blind hole on the outer end surface, and a spring 34 and a support rod 35 installed in the blind hole of the support leg seat 33, one inside and one outside; the spring support leg 3 is connected to a nut 62 arranged at the bottom of the second inverted T-shaped groove 12 or the bottom of the third inverted T-shaped groove 12 through a bolt 30 inserted in the sleeve 31, so that the outer end of the support rod 35 is against the outer diameter surface of the bearing ring. The open ring 32 is screwed on the sleeve 31, and the height of the support rod 35 can be adjusted according to the size of the bearing ring to be measured; the spring 34 is used to limit the movement range of the support rod 35.

[0040] The movable support foot 4 is installed in the first inverted T-shaped groove 11 of the base 1 and is opposite to the base fulcrum 2 installed in the first inverted T-shaped groove 11; the movable support foot 4 includes a mounting block and an adjusting screw 40; wherein the mounting block is in an inverted T shape and includes a horizontal portion 41 and a vertical portion 43 fixed to the middle of the top surface of the horizontal portion 41, the width of the horizontal portion 41 is greater than the upper width of the first inverted T-shaped groove 11, and a countersunk hole 43 is respectively provided on both sides of the vertical portion 42 on the top surface of the horizontal portion 41, so that the mounting block is connected to the first inverted T-shaped groove 11 through two screws 61 inserted in the two countersunk holes 43 correspondingly. The two nuts 62 at the bottom of the inverted groove 11 are connected; a threaded through hole is horizontally opened on the side of the vertical portion 42; the adjusting screw 40 is installed in the threaded through hole of the vertical portion 42, and the horizontal projection of the axis of the adjusting screw 40 is located on the top surface of the base 1 on the transverse center line, and the end of the adjusting screw 40 is against the outer diameter surface of the bearing ring; the outer ends of the support rods 35 of the two spring support feet 3 and the end of the adjusting screw 40 of the movable support foot 4 are both located on a circle that matches the outer diameter of the bearing ring; the bearing ring can be pushed to move along the first inverted T-shaped groove 11 by rotating the adjusting screw 40.

[0041] The measuring gauge 5 is installed in the first inverted T-shaped groove 11 of the base 1 through the gauge base 50; a countersunk hole 51 is opened on the top surface of one side of the gauge base 50, and an inverted conical support base 52 is fixed on the top surface of the other side of the gauge base 50; the gauge base 50 is connected to a nut 62 arranged at the bottom of the first inverted T-shaped groove 11 through a screw 61 inserted into the countersunk hole 51 of the gauge base 50; the measuring gauge 5 is a micrometer, the gauge head of the micrometer is installed on the top surface of the support base 52, and the measuring rod 5A of the micrometer is hinged on the outer surface of the gauge head.

[0042] The method for measuring the angle of the cylindrical roller bearing ring rib of the present invention comprises the following steps:

[0043] Step 1, adjust the positions of the three base fulcrums 2, the two spring support feet 3 and the movable support foot 4 according to the outer diameter and inner diameter of the measured bearing ring; when adjusting the position of the base fulcrum 2, just loosen the connection between the screw 61 and the corresponding nut 62 on the fulcrum seat 21 first, then move the fulcrum seat 21 with the corresponding nut 62 to the appropriate position, and then tighten the screw 61 and the corresponding nut 62 on the fulcrum seat 21; when adjusting the position of the spring support foot 3, just loosen the connection between the bolt 30 in the sleeve 31 and the corresponding nut 62 first, then move the sleeve 31 with the corresponding nut 62 to the appropriate position, and then tighten the screw 61 and the corresponding nut 62 in the sleeve 31; when adjusting the position of the movable support foot 4, just loosen the connection between the bolt 30 on the mounting block and the corresponding nut 62 first, then move the mounting block with the corresponding nut 62 to the appropriate position, and then tighten the screw 61 on the mounting block and the corresponding nut 62;

[0044] Step 2: seat the bearing ring on the support head 22 of the three base fulcrums 2, and clamp and center it by the ends of the support rod 35 of the two spring support feet 3 with an angle of 90° and the end of the adjusting screw 40 of the movable support foot 4;

[0045] Step 3: If the bearing ring to be measured is the outer ring 71, install the measuring gauge 5 on the inner side of the outer ring 71, so that the horizontal projection of the axis of the measuring rod 5A of the measuring gauge 5 is located on the top surface of the base 1 on the horizontal center line, and the end of the measuring rod 5A is against the lower rib of the outer ring 71 (see Figure 1 and Figure 2 ); If the bearing ring to be measured is the inner ring 72, install the measuring gauge 5 on the outer side of the inner ring 72, so that the horizontal projection of the axis of the measuring rod 5A of the measuring gauge 5 is located on the top surface of the base 1 on the horizontal center line, and the end of the measuring rod 5A is against the lower rib of the inner ring 72 (see Figure 7 and Figure 8 ); When installing the measuring meter 5, just loosen the connection between the screw 61 on the meter base 50 and the corresponding nut 62, then move the meter base 50 with the corresponding nut 62 to a suitable position, and then tighten the screw 61 on the meter base 50 and the corresponding nut 62;

[0046] Step 4: By rotating the adjusting screw 40 of the movable supporting foot 4, the outer ring 71 or the inner ring 72 is pushed to move along the first inverted T-shaped groove 11 toward the direction of the measuring table 5. During the movement of the outer ring 71 or the inner ring 72, it is equivalent to moving the end of the measuring rod 5A of the measuring table 5 from one end of the rib to the other end of the rib, thereby obtaining the difference a between the height of one end of the rib and the height of the other end of the rib;

[0047] Step 5: According to the difference a between the height of one end of the rib and the height of the other end of the rib measured in the measurement table 5 and the length b of the rib obtained by measurement, the inclination angle α of the rib is calculated using the trigonometric function tanα=a / b.

[0048] The above embodiments are only used to illustrate the present invention, rather than to limit the present invention. Those skilled in the relevant technical field may make various changes or modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions should also belong to the scope of the present invention and should be defined by the claims.

Claims

1. A method for measuring the angle of a cylindrical roller bearing ring rib, using a measuring device for the angle of a cylindrical roller bearing ring rib, the measuring device comprising a base, three base fulcrums, two spring support feet, a movable support foot and a measuring table; wherein, The plane of the base is rectangular, and a first inverted T-shaped groove is provided on the top surface of the base on the transverse center line, a second inverted T-shaped groove is provided on a line at +45° to the transverse center line, and a third T-shaped groove is provided on a line at -45° to the transverse center line; the first inverted T-shaped groove, the second inverted T-shaped groove and the third inverted T-shaped groove intersect at the center of the top surface of the base; The three base fulcrums are installed in the first inverted T-shaped groove, the second inverted T-shaped groove and the third inverted T-shaped groove of the base in a one-to-one correspondence, the centers of the support heads arranged on the three base fulcrums are all located on a circle with the center of the top surface of the base as the center and a diameter smaller than the outer diameter of the bearing ring and larger than the inner diameter of the bearing ring, and the center lines of the support heads on the three base fulcrums are isosceles triangles; Two spring support feet are installed in the second inverted T-shaped groove and the second inverted T-shaped groove of the base in a one-to-one correspondence and are opposite to the base fulcrum installed in the second inverted T-shaped groove and the base fulcrum in the second inverted T-shaped groove in a one-to-one correspondence; The movable supporting foot is installed in the first inverted T-shaped groove of the base and is opposite to the base fulcrum installed in the first inverted T-shaped groove; the movable supporting foot includes a mounting block and an adjusting screw; the mounting block is in an inverted T-shape and includes a horizontal portion and a vertical portion fixed to the middle portion of the top surface of the horizontal portion, a countersunk hole is respectively provided on both sides of the vertical portion on the top surface of the horizontal portion, so that the mounting block is connected to two nuts provided at the bottom of the first inverted T-shaped groove through two screws inserted into the two countersunk holes in a one-to-one correspondence; a threaded through hole is horizontally provided on the side surface of the vertical portion; the adjusting screw is installed in the threaded through hole of the vertical portion, the horizontal projection of the axis of the adjusting screw is located on the top surface of the base on the transverse center line, and the end of the adjusting screw is against the outer diameter surface of the bearing ring; The horizontal ends of the two spring support feet and the end of the adjusting screw of the movable support foot are all located on a circle that matches the outer diameter of the bearing ring; The measuring gauge is installed in the first inverted T-shaped groove of the base through a gauge seat; a countersunk hole is provided on the top surface of one side of the gauge seat, and an inverted cone-shaped support seat is fixed on the top surface of the other side of the gauge seat; the gauge seat is connected to a nut provided at the bottom of the first inverted T-shaped groove through a screw inserted in the countersunk hole of the gauge seat; the measuring gauge is a micrometer and is installed on the top surface of the support seat; Characterized in that the measuring method comprises the following steps: Step 1: adjust the positions of three base fulcrums, two spring support feet and movable support feet according to the outer diameter and inner diameter of the bearing ring to be tested; Step 2: seat the bearing ring on the top surface of the three base fulcrums and clamp it for centering by the horizontal ends of the two spring support feet and the ends of the adjusting screws of the movable support feet; Step 3: If the bearing ring to be measured is an outer ring, install the measuring gauge on the inner side of the outer ring so that the horizontal projection of the axis of the measuring rod of the measuring gauge is located on the top surface of the base on the horizontal center line, and the end of the measuring rod is against the lower rib of the outer ring; if the bearing ring to be measured is an inner ring, install the measuring gauge on the outer side of the inner ring so that the horizontal projection of the axis of the measuring rod of the measuring gauge is located on the top surface of the base on the horizontal center line, and the end of the measuring rod is against the lower rib of the outer ring; Step 4: by adjusting the movable support foot, the outer ring or the inner ring is pushed to move along the first inverted T-shaped groove toward the measuring table. During the movement of the outer ring or the inner ring, it is equivalent to moving the end of the measuring rod of the measuring table relatively from one end of the rib to the other end of the rib, and obtaining the difference a between the height of one end of the rib and the height of the other end of the rib; Step 5: According to the difference a between the height of one end of the rib and the height of the other end of the rib measured by the measuring table and the length b of the rib obtained by measurement, the inclination angle α of the rib is calculated using the trigonometric function tanα=a / b.

2. The method for measuring the angle of the cylindrical roller bearing ring according to claim 1, characterized in that: The base fulcrum includes a fulcrum seat and a support head; the fulcrum seat is a rectangular block and has a countersunk hole and a hemispherical groove on the top surface, one inside and one outside; the fulcrum seat is connected to a nut arranged at the bottom of the first inverted T-shaped groove, the bottom of the second inverted T-shaped groove, or the bottom of the third inverted T-shaped groove through a bolt inserted in the countersunk hole; the support head is a steel ball and is installed in the hemispherical groove of the fulcrum seat; the bearing ring seat is on the support heads of the three base fulcrums.

3. The method for measuring the angle of the cylindrical roller bearing ring according to claim 1, characterized in that: The spring support foot includes a sleeve, an open ring installed on the sleeve, a support foot seat fixed on the outer surface of the open ring and having a blind hole on the outer end surface, and a spring and a support rod installed in the blind hole of the support foot seat, one inside and one outside; the spring support foot is connected to a nut arranged at the bottom of the second inverted T-shaped groove or the bottom of the third inverted T-shaped groove through a bolt inserted in the sleeve, so that the outer end of the support rod is against the outer diameter surface of the bearing ring.

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